Sniper scopes are designed for high-resolution sighting of distant targets where precision is an absolute necessity. Windage/elevation adjustments are performed by moving the external target style turrets. After the scope is adjusted to your specific shooting distance you can then re-zero the turret charts, a small screw at the topĖside of the turret can be loosened and the chart can be reset to zero. The multi-coated lenses are flawless with perfect clarity for distant viewing and sighting of still and moving objects and also protect against the sunís UV rays, and enhance light transmission. Sniper scopes are used in military, hunting, and varmint hunting situations where targets must be sighted at a distant great enough to prevent danger to the hunter. In each of these settings the scopes have proven to be accurate and rugged in the harshest conditions.